Measurement of the B0 lifetime and oscillation frequency using (B)over-bar0→D*+l-(ν)over-bar decays

被引：26

作者：

Abbiendi, G ^{[1
]}

Ackerstaff, K

Ainsley, C

Åkesson, PF

Alexander, G

Allison, J

Anderson, KJ

Arcelli, S

Asai, S

Ashby, SF

Axen, D

Azuelos, G

Bailey, I

Ball, AH

Barberio, E

Barlow, RJ

Baumann, S

Behnke, T

Bell, KW

Bella, G

Bellerive, A

Benelli, G

Bentvelsen, S

Bethke, S

Biebel, O

Bloodworth, IJ

Boeriu, O

Bock, P

Böhme, J

Bonacorsi, D

Boutemeur, M

Braibant, S

Bright-Thomas, P

Brigliadori, L

Brown, RM

Burckhart, HJ

Cammin, J

Capiluppi, P

Carnegie, RK

Carter, AA

Carter, JR

Chang, CY

Charlton, DG

Clarke, PEL

Clay, E

Cohen, I

Cooke, OC

Couchman, J

Couyoumtzelis, C

Coxe, RL

机构：

[1] Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy

[2] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[4] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[5] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

[6] Cavendish Lab, Cambridge CB3 0HE, England

[7] Carleton Univ, Dept Phys, Ottawa Carleton Inst Phys, Ottawa, ON K1S 5B6, Canada

[8] Carleton Univ, Ctr Res Particle Phys, Ottawa, ON K1S 5B6, Canada

[9] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland

[10] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[11] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[12] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

[13] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[14] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[15] Queen Mary Univ London, London E1 4NS, England

[16] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

[17] UCL, London WC1E 6BT, England

[18] Univ Manchester, Schuster Lab, Dept Phys, Manchester M13 9PL, Lancs, England

[19] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[20] Univ Montreal, Phys Nucl Lab, Montreal, PQ H3C 3J7, Canada

[21] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

[22] Rutherford Appleton Lab, CLRC, Didcot OX11 0QX, Oxon, England

[23] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[24] Tel Aviv Univ, Dept Phys & Astron, IL-69978 Tel Aviv, Israel

[25] Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo 1130033, Japan

[26] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[27] Kobe Univ, Kobe, Hyogo 6578501, Japan

[28] Weizmann Inst Sci, Particle Phys Dept, IL-76100 Rehovot, Israel

[29] Univ Hamburg, DESY, Inst Expt Phys 2, D-22607 Hamburg, Germany

[30] Univ Victoria, Dept Phys, Victoria, BC V8W 3P6, Canada

[31] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada

[32] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[33] Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

[34] Inst Nucl Res, H-4001 Debrecen, Hungary

[35] Univ Munich, Sekt Phys, D-85748 Garching, Germany

[36] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[37] TRIUMF, Vancouver, BC V6T 2A3, Canada

[38] Max Planck Inst, Munich, Germany

[39] Res Inst Partcile & Nucl Phys, Budapest, Hungary

[40] Inst Nucl Res, H-4001 Debrecen, Hungary

[41] CERN, Div EP, CH-1211 Geneva 23, Switzerland

[42] Univ Min & Met Krakow, Krakow, Poland

[43] Univ Debrecen, Dept Expt Phys, Debrecen, Hungary

[44] Univ Calif Riverside, High Energy Phys Grp, Riverside, CA 92521 USA

来源：

PHYSICS LETTERS B | 2000年 / 493卷 / 3-4期

基金：

美国国家科学基金会; 以色列科学基金会; 日本学术振兴会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/S0370-2693(00)01145-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The lifetime and oscillation frequency of the B-0 meson has been measured using (B) over bar (0) --> D(*+)l(-)<(<nu>)over bar> decays recorded on the Z(0) peak with the OPAL detector at LEP. The D*+ --> D(0)pi (+) decays were reconstructed using an inclusive technique and the production flavour of the B-0 mesons was determined using a combination of tags from the rest of the event. The results tau (B0) = 1.541 +/- 0.028 +/- 0.023 ps, Deltam(d) = 0.497 +/- 0.024 +/- 0.025 ps(-1) were obtained, where in each case the first error is statistical and the second is systematic. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：266 / 280

页数：15

共 50 条

[1] Measurement of the (B)over-bar lifetime and the B0(B)over-bar0 oscillation frequency using partially reconstructed (B)over-bar0→D*+ l-(v)over-barl decays -: art. no. 012004
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